as in childish
having or showing the annoying qualities (as silliness) associated with children
the infantile humor that teenage boys are justly famous for
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Example Sentences
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Recent Examples of infantile
The curious case of infantile amnesia The phenomenon of not remembering anything from early childhood is known as infantile amnesia.
—
Aamir Khollam, Interesting Engineering, 21 Mar. 2025
If nothing else is done with those mice, that association will apparently be forgotten later in life due to infantile amnesia.
—John Timmer, Ars Technica, 21 Mar. 2025
For a long time, infantile amnesia was thought to be tied to an inability to make memories in infancy.
—Sam Walters, Discover Magazine, 20 Mar. 2025
If this is correct, is there a connection between song and the most basic infantile communication?
—Aaron Shattuck, Scientific American, 18 Feb. 2025
See All Example Sentences for infantile
Aamir Khollam, Interesting Engineering, 21 Mar. 2025
If nothing else is done with those mice, that association will apparently be forgotten later in life due to infantile amnesia.
—John Timmer, Ars Technica, 21 Mar. 2025
For a long time, infantile amnesia was thought to be tied to an inability to make memories in infancy.
—Sam Walters, Discover Magazine, 20 Mar. 2025
If this is correct, is there a connection between song and the most basic infantile communication?
—Aaron Shattuck, Scientific American, 18 Feb. 2025
See All Example Sentences for infantile
Recent Examples of Synonyms for infantile
Adjective
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Any version of art for art’s sake has always seemed a little childish to me, a bit of adolescent posturing (the phrase was apparently especially beloved by members of the 19th century Aesthetic Movement, one of the high points of a certain kind of brattiness).—
Literary Hub,
Literary Hub,
7 Oct. 2025
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Very unprofessional and very very childish.—
Cole Sullivan,
MSNBC Newsweek,
6 Oct. 2025
Adjective
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Commenting on Taiwan’s possible nuclear options, Jusen Asuka, a professor at Tohoku University and chair of the session in the conference, cautioned that SMRs remain immature and costly, and investing heavily in them could slow renewable energy development.—
Yu-Tzu Chiu,
IEEE Spectrum,
2 Oct. 2025
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In some cases, these are labelled as muscular injuries but Monasterio warns players at these ages are still skeletally immature in these regions.—
Sarah Shephard,
New York Times,
1 Oct. 2025
Adjective
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My adolescent cells floated away from poor me and traded places with his.—
Betty Gilpin,
HollywoodReporter,
9 Oct. 2025
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Social media influencers stood out as a significant source of emotional support for adolescent boys.—
Ashleigh N. DeLuca,
Parents,
8 Oct. 2025
Adjective
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The student was taken to the Wautoma Police Department, then was transferred to a juvenile detention facility with the help of Waushara County Youth Justice, according to the department.—
Kelli Arseneau,
jsonline.com,
10 Oct. 2025
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The juvenile male, still unnamed, is charged with one count of capital murder, nine counts of first-degree assault, and three counts of second-degree assault, according to the Montgomery Police Department.—
Emily Hallas,
The Washington Examiner,
10 Oct. 2025
Cite this Entry
“Infantile.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infantile. Accessed 14 Oct. 2025.
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